57042437 has 2 divisors, whose sum is σ = 57042438. Its totient is φ = 57042436.

The previous prime is 57042421. The next prime is 57042457. The reversal of 57042437 is 73424075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54893281 + 2149156 = 7409^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 57042437 - 2⁴ = 57042421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57042407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521218 + 28521219.

It is an arithmetic number, because the mean of its divisors is an integer number (28521219).

Almost surely, 2^57042437 is an apocalyptic number.

It is an amenable number.

57042437 is a deficient number, since it is larger than the sum of its proper divisors (1).

57042437 is an equidigital number, since it uses as much as digits as its factorization.

57042437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 57042437 is about 7552.6443713444. The cubic root of 57042437 is about 384.9455975303.

The spelling of 57042437 in words is "fifty-seven million, forty-two thousand, four hundred thirty-seven".